34 You are considering the use of sampling to determine the average age of perso

Question

34 You are considering the use of sampling to determine the average age of persons attending a movie at different times during the day. Assume that you have controlled sampling risk to 10 percent and estimate that the average age is 43 years, with an associated precision of 10 years and a reliability of 90 percent. 5 pointsForm a precision interval based on your sampling application (Enter the lower bound and the upper bound of the precision interval.) [ lr Tears Precision interval ears to eBook Print References

Explanation / Answer

Precision interval =average ± precision

so lower bound = average - precision

=43-10

=33

upper bound =average + precision

=43+10

=53

Hence precision interval is from 33 years to 53 years

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